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| author | John Garry <john.garry@huawei.com> | 2020-12-04 02:34:50 +0800 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-12-08 14:14:48 +0000 |
| commit | 2f24dfb71208eeb0174f08dd56ca6d3c17b279a5 (patch) | |
| tree | 82596f8a3c8414f8ce7366b4e6fa1d2b96ef7f1e /drivers | |
| parent | 3a651b3a27a1ee35879499ead3942dc854a20968 (diff) | |
| download | linux-stable-2f24dfb71208eeb0174f08dd56ca6d3c17b279a5.tar.gz linux-stable-2f24dfb71208eeb0174f08dd56ca6d3c17b279a5.tar.bz2 linux-stable-2f24dfb71208eeb0174f08dd56ca6d3c17b279a5.zip | |
iommu: Delete split_and_remove_iova()
Function split_and_remove_iova() has not been referenced since commit
e70b081c6f37 ("iommu/vt-d: Remove IOVA handling code from the non-dma_ops
path"), so delete it.
Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1607020492-189471-2-git-send-email-john.garry@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/iova.c | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c index ff59d8aa3041..3331c040b2b0 100644 --- a/drivers/iommu/iova.c +++ b/drivers/iommu/iova.c @@ -742,47 +742,6 @@ copy_reserved_iova(struct iova_domain *from, struct iova_domain *to) } EXPORT_SYMBOL_GPL(copy_reserved_iova); -struct iova * -split_and_remove_iova(struct iova_domain *iovad, struct iova *iova, - unsigned long pfn_lo, unsigned long pfn_hi) -{ - unsigned long flags; - struct iova *prev = NULL, *next = NULL; - - spin_lock_irqsave(&iovad->iova_rbtree_lock, flags); - if (iova->pfn_lo < pfn_lo) { - prev = alloc_and_init_iova(iova->pfn_lo, pfn_lo - 1); - if (prev == NULL) - goto error; - } - if (iova->pfn_hi > pfn_hi) { - next = alloc_and_init_iova(pfn_hi + 1, iova->pfn_hi); - if (next == NULL) - goto error; - } - - __cached_rbnode_delete_update(iovad, iova); - rb_erase(&iova->node, &iovad->rbroot); - - if (prev) { - iova_insert_rbtree(&iovad->rbroot, prev, NULL); - iova->pfn_lo = pfn_lo; - } - if (next) { - iova_insert_rbtree(&iovad->rbroot, next, NULL); - iova->pfn_hi = pfn_hi; - } - spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags); - - return iova; - -error: - spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags); - if (prev) - free_iova_mem(prev); - return NULL; -} - /* * Magazine caches for IOVA ranges. For an introduction to magazines, * see the USENIX 2001 paper "Magazines and Vmem: Extending the Slab |